Warning: Permanently added '10.128.0.152' (ED25519) to the list of known hosts. executing program syzkaller login: [ 44.309958][ T4021] loop0: detected capacity change from 0 to 32768 [ 44.379972][ T4021] BTRFS: device fsid 395ef67a-297e-477c-816d-cd80a5b93e5d devid 1 transid 8 /dev/loop0 scanned by syz-executor915 (4021) [ 44.394513][ T4021] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 44.397095][ T4021] BTRFS info (device loop0): using free space tree [ 44.399089][ T4021] BTRFS info (device loop0): has skinny extents [ 44.422515][ T4021] BTRFS info (device loop0): enabling ssd optimizations [ 44.440132][ T4021] BTRFS info (device loop0): balance: start -s [ 44.443793][ T4021] ------------[ cut here ]------------ [ 44.445695][ T4021] WARNING: CPU: 1 PID: 4021 at fs/btrfs/block-group.c:2437 btrfs_create_pending_block_groups+0x9e8/0xca8 [ 44.448943][ T4021] Modules linked in: [ 44.450023][ T4021] CPU: 1 PID: 4021 Comm: syz-executor915 Not tainted 5.15.182-syzkaller #0 [ 44.452440][ T4021] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 [ 44.455329][ T4021] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 44.457607][ T4021] pc : btrfs_create_pending_block_groups+0x9e8/0xca8 [ 44.459468][ T4021] lr : btrfs_create_pending_block_groups+0x9e8/0xca8 [ 44.461325][ T4021] sp : ffff80001bed7540 [ 44.462541][ T4021] x29: ffff80001bed7710 x28: ffff0000c10be858 x27: ffff0000de54b110 [ 44.464809][ T4021] x26: ffff0000de54b108 x25: ffff0000c10be850 x24: dfff800000000000 [ 44.467067][ T4021] x23: ffff0000c10be9b0 x22: 1fffe00018217d0b x21: 1fffe00018217d0a [ 44.469380][ T4021] x20: 00000000ffffffe4 x19: ffff0000d66419d0 x18: 0000000000000001 [ 44.471613][ T4021] x17: 0000000000000000 x16: ffff8000111a53fc x15: 00000000ffffffff [ 44.473869][ T4021] x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 [ 44.476185][ T4021] x11: 0000000000000000 x10: 0000000000000000 x9 : 5e38a72420483f00 [ 44.478490][ T4021] x8 : 5e38a72420483f00 x7 : 0000000000000001 x6 : 0000000000000001 [ 44.480751][ T4021] x5 : ffff80001bed6e38 x4 : ffff80001422f280 x3 : ffff800008503828 [ 44.483101][ T4021] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 44.485350][ T4021] Call trace: [ 44.486241][ T4021] btrfs_create_pending_block_groups+0x9e8/0xca8 [ 44.488047][ T4021] __btrfs_end_transaction+0x13c/0x608 [ 44.489658][ T4021] btrfs_end_transaction+0x24/0x34 [ 44.491131][ T4021] btrfs_inc_block_group_ro+0x4ec/0x558 [ 44.492761][ T4021] btrfs_relocate_block_group+0x2b8/0x8a4 [ 44.494385][ T4021] btrfs_relocate_chunk+0xb8/0x280 [ 44.495814][ T4021] __btrfs_balance+0x1170/0x1ba4 [ 44.497262][ T4021] btrfs_balance+0xac4/0x1138 [ 44.498615][ T4021] btrfs_ioctl_balance+0x4cc/0x658 [ 44.500009][ T4021] btrfs_ioctl+0x8d0/0xb38 [ 44.501243][ T4021] __arm64_sys_ioctl+0x14c/0x1c8 [ 44.502614][ T4021] invoke_syscall+0x98/0x2b8 [ 44.503892][ T4021] el0_svc_common+0x138/0x258 [ 44.505280][ T4021] do_el0_svc+0x58/0x14c [ 44.506517][ T4021] el0_svc+0x78/0x1e0 [ 44.507642][ T4021] el0t_64_sync_handler+0xcc/0xe4 [ 44.509049][ T4021] el0t_64_sync+0x1a0/0x1a4 [ 44.510303][ T4021] irq event stamp: 86412 [ 44.511489][ T4021] hardirqs last enabled at (86411): [] __up_console_sem+0xb4/0x100 [ 44.514147][ T4021] hardirqs last disabled at (86412): [] el1_dbg+0x24/0x80 [ 44.516617][ T4021] softirqs last enabled at (86202): [] handle_softirqs+0xa4c/0xbf0 [ 44.519364][ T4021] softirqs last disabled at (86135): [] __irq_exit_rcu+0x240/0x440 [ 44.522078][ T4021] ---[ end trace 0166862ca76f175b ]--- [ 44.525842][ T4021] BTRFS: error (device loop0) in btrfs_create_pending_block_groups:2437: errno=-28 No space left [ 44.528902][ T4021] BTRFS info (device loop0): forced readonly [ 44.530921][ T4021] BTRFS: error (device loop0) in btrfs_create_pending_block_groups:2448: errno=-28 No space left [ 44.534724][ T4021] BTRFS: error (device loop0) in add_block_group_free_space:1315: errno=-28 No space left [ 44.538261][ T4021] BTRFS info (device loop0): balance: ended with status: -30